14 research outputs found
Tmax and CTH maps for three patients.
<p>Each row shows the most representative images of one patient. The first column depicts Tmax, the second CTH maps. Color-coded bars show Tmax and CTH values in seconds, respectively. The first patient (a, b) had perfusion abnormalities in the same region for Tmax and CTH with differing parts of that region being most severely affected. The second patient (c, d) shows a severe Tmax restriction while only slightly elevated CTH values can be seen. In the third patient (e, f) the profile for both Tmax and CTH seems to be comparable in the anterior and posterior middle cerebral artery border zone, while it is different in the temporoparietal region.</p
Parameters of ROC-curve (AUC, standard error, CI) and univariate analysis (in median and [IQR]) for all perfusion parameters with significant differences.
<p>Parameters of ROC-curve (AUC, standard error, CI) and univariate analysis (in median and [IQR]) for all perfusion parameters with significant differences.</p
Contributions to the development of a multi-stage flash/fluidized bed evaporator (msf/fbe)
Mechanical Maritime and Materials Engineerin
Additional file 1: Figure S1. of Time-dependent parameter of perfusion imaging as independent predictor of clinical outcome in symptomatic carotid artery stenosis
CT Angiography of the patient shown in Fig.ĂÂ 2. (TIF 1426 kb
Asymmetry of Deep Medullary Veins on Susceptibility Weighted MRI in Patients with Acute MCA Stroke Is Associated with Poor Outcome
<div><p>Background and Purpose</p><p>Due to its sensitivity to deoxyhemoglobin, susceptibility weighted imaging (SWI) enables the visualization of deep medullary veins (DMV) in patients with acute stroke, which are difficult to depict under physiological circumstances. This study assesses the asymmetric appearance of prominent DMV as an independent predictor for stroke severity and outcome.</p><p>Materials and Methods</p><p>SWI of 86 patients with acute middle cerebral artery (MCA) stroke were included. A scoring system from 0 (no visible DMV) to 3 (very prominent DMV) was applied for both hemispheres separately. A difference of scores between ipsi- and contralateral side was defined as asymmetric (AMV+). Occurrence of AMV+ was correlated with the National Institute of Health Stroke Scale (NIHSS) Score on admission and discharge, as well as the modified Rankin Scale (mRS) at discharge. Ordinal regression analysis was used to evaluate NIHSS and mRS as predictors of stroke severity, clinical course of disease and outcome.</p><p>Results</p><p>55 patients displayed AMV+ while 31 did not show an asymmetry (AMVâ). Median NIHSS on admission was 17 (11â21) in the AMV+ group and 9 (5â15) in the AMVâ group (p = 0.001). On discharge median NIHSS was 11 (5â20) for AMV+ and 5 (2â14) for AMVâ (p = 0.005). The median mRS at discharge was 4 (3â5) in the AMV+ group and 3 (1â4) in AMVâ (p = 0.001). Odds ratio was 3.19 (95% CI: 1.24â8.21) for AMV+ to achieve a higher mRS than AMVâ (p = 0.016).</p><p>Conclusion</p><p>The asymmetric appearance of DMV on SWI is a fast and easily evaluable parameter for the prediction of stroke severity and can be used as an additional imaging parameter in patients with acute MCA stroke.</p></div
Endovascular treatment success in AMV+ and AMVâ.
<p>No. successfully treated/total no. of patients, (%).</p><p>Endovascular treatment success in AMV+ and AMVâ.</p
Scoring system for the quantification of DMV.
<p>A) 0 = no visible DMV B) 1 = faintly visible DMV C) 2 = unequivocal visible DMV D) 3 = very prominent DMV.</p
Clinical and demographic features of AMV+ and AMVâ.
<p>Clinical and demographic features of AMV+ and AMVâ.</p
Patient with right MCA infarction.
<p>A) Reduced perfusion within the territory of the right MCA. B) Asymmetric appearance of prominent periventricular DMV within the infarcted area (arrows).</p
Histological composition of the different MRI classifications.
<p>For all 561 biopsy samples, the relative frequency of the different histologic classifications within each MRI classification is displayed. NE = non-enhancing part on cT1; CE = contrast enhancement on cT1; NEC = Necrosis on cT1.</p